The leap second is not for majority of people, but for scientists and astronomers so that they can use UTC. Cf. https://www.nist.gov/pml/time-and-frequency-div

The leap second is not for majority of people, but for scientists and astronomers so that they can use UTC. Cf. https://www.nist.gov/pml/time-and-frequency-division/leap-seconds-faqs#adding https://www.nist.gov/pml/time-and-frequency-division/leap-se...